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Porsche Forum Australia

Putting at 3.6l into a 3.4l 996

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5 captured repliesPartial discussion capture · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHPutting at 3.6l into a 3.4l 996

Leading reported evidence

Replace engine

Suggestion or failed attempt

No successful repair reported for this finding.

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Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.

Discussions that contain suggestions
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Suggestion

However I would seek an independant evaluation of the problem before spending 20k+ replacing the engine.

Putting at 3.6l into a 3.4l 996
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Leading evidence: 'Replace engine' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Replace engine' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.

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1 matching discussions · 5 captured posts examined · 1 partial discussions

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Replace required

Suggestion or failed attempt

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context

Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.

Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion

There would be some changes required to integrate the engine(and transmission if you have a Tiptronic) ECU.

Putting at 3.6l into a 3.4l 996

Use someone who knows what they are doing

Suggestion or failed attempt

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context

Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.

Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion

Buiks rates are very fair, however its not really about the rates, its about using someone who knows what they are doing and that you can trust.

Putting at 3.6l into a 3.4l 996
Frequently discussed actions (3)

These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.

Replace engine

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion

However I would seek an independant evaluation of the problem before spending 20k+ replacing the engine.

Putting at 3.6l into a 3.4l 996

Replace required

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion

There would be some changes required to integrate the engine(and transmission if you have a Tiptronic) ECU.

Putting at 3.6l into a 3.4l 996

Use someone who knows what they are doing

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion

Buiks rates are very fair, however its not really about the rates, its about using someone who knows what they are doing and that you can trust.

Putting at 3.6l into a 3.4l 996
Coverage and how to read this overview

Counts describe captured discussions, not unique people or a diagnosis. Author identities are not reliably stored. Exact duplicate evidence is counted once across matching discussions; one discussion counts at most once per action/state. Multiple repairs reported together remain a combination. Suggestions and failed attempts do not establish a fix. Matches cover whole discussions and can include related faults, model variants and incomplete threads.

5 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.

  • Porsche Forum Australia: 1 discussions

0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.

0 acknowledgements have no verified action link; they do not establish a repair result.

Generation: 20261026T194705Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Hi All, My 996 3.4l (1998) has the dreaded oil in the coolant and I was thinking of moving to a 3.6l. Can anyone advise me if this is a straight drop out and drop in process. Is there any with gearbox's mating up or ECU's etc

POST 2Original post

Greetings, So you have a 3.4 M96 engine that has an issue. Are you asking if you can install a 3.6 (GT3) engine into the car, or a later 3.6 M96 engine? The GT3 engine is a different design and presents some challenges for integration to the standard carrera. The later M96 3.6 would essentially drop in with little difference to the 3.4. There would be some changes required to integrate the engine(and transmission if you have a Tiptronic) ECU. You will need the 3.6 ECU for it to work correctly. Who has done the diagnosis on the 3.4? even though there is oil in the coolant, it may not be a terminal failure. You have some options: 1) Possible oil/water heat exchanger leak or failure, can be replaced 2) Possible head gasket failure, can be replaced 3) or, finally, replacement engine if its a terminal failure. If you haven't already done so, take the car to Buik Motors in Richmond and have them assess the car.

POST 3 / ORIGINAL POSTEROriginal post

Cheers for the advice, I have yet had someone look at it but if it was terminal I was wondering if this was an options. I know where Buik Motors are have you found there rates fair?

POST 4Original post

Quotes source post: 49317

This is an option, yes. However I would seek an independant evaluation of the problem before spending 20k+ replacing the engine. Buiks rates are very fair, however its not really about the rates, its about using someone who knows what they are doing and that you can trust. You will find both these attributes at Buiks. Book the car in as soon as possible to determine exactly what the problem is, if your oil level is not dropping dramatically, you may find that it is not a terminal issue.

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